package com.zhz.utils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.InputStream;

/**
 * 工具类
 */
public class MyBatisUtil {
    private static SqlSessionFactory factory;

    static {//在静态代码块下，factory只会被创建一次
        try {
            InputStream is = Resources.getResourceAsStream("mybatis-config.xml");
            factory = new SqlSessionFactoryBuilder().build(is);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static SqlSession createSqlSession() {
        return factory.openSession(false);//true为自动提交事务
    }

    public static void closeSqlSession(SqlSession sqlSession) {
        if (null != sqlSession) {
            sqlSession.close();
        }
    }


}
